Thanks Louis I will be making one

Your next question will be what size thread die...I have a 3/16"x32 and 10x32
and each work...3/16"x32 is an old standard that MAY have been what was
used...some of the Tillotson AJ have a 1/4" super fine thread drain plug
screw in bottom of float well...a curious choice that I verified using a
thread gage.
Louis
Just to be on safe side take old part with you when buying a die as they
are not cheap and my memory is subject to revision when the facts come in.

Louis: I have a lot of dies when I get a 3/16 rod i will look at my dies I amsure I got one Thanks vince

http://www.ebay.com/itm/NEW-OEM-Mercury-Marine-Outboard-Needle-Valve-NOS-/261643711520?pt=Boat_Parts_Accessories_Gear&hash=item3ceb2e3420&vxp=mtr


http://www.ebay.com/itm/Mercury-Kiekhaefer-KF3-10-23264-Carb-Carburetor-Main-Adjustment-Screw-Needle-/151181299391?pt=Boat_Parts_Accessories_Gear&hash=item23331b8ebf&vxp=mtr